support windows 10 unprivileged symlinks

[rkitover]

Cygwin has added support for the new Windows 10 feature allowing unprivileged users to create symlinks, could we get this feature added in the msys2 runtime? It may be just a matter of updating the package to use newer cygwin sources.

[mirh]

Duplicate of #847

EDIT: could you rename the issue to refer back to the *other* "fixes" that could be attempted (for w10 too, but not exclusively)?

[saschanaz]

ln -s now works without an admin privilege, so this probably can be closed.

[mati865]

Yeah it works fine after commenting set MSYS=winsymlinks:nativestrict from /msys2_shell.cmd.

[rkitover]

Just to be sure, you did not have to turn on developer mode in settings for this to work?

[saschanaz]

Unprevileged symlinks need developer mode, so yes I did.

[rkitover]

Same thing in powershell anyway.